Air distance from Saint-Denis, Reunion (French) to Vienna, Austria is 5321.3 Miles (8563.8 Kilometers / 4621 Nautical Miles).
Flight duration time from Saint-Denis to Vienna is 11 hrs, 2 mins. This is the In-The-Air flight time. You should also add the taxi time, airport wait times and possible delays due to bad weather, etc. for the total flight duration time.